This is only a concern with Epoxy primer.
Rustoleum, Tractor paint, Arcylic enamals and oil based are not bothered by the acid.
That's why the instructions on Ospho read the way they do.
BASF, PPG and the other big manufacturing companies make their own similar product to Ospho, and all say it must be neutralized and rinsed off before applying Epoxy.
